Name: analyzing circuits with superposition
Uploaded: 2024-04-11T12:48:31.000Z
Duration: 1 min 18 s
Channel: JoVE

El teorema de superposición se utiliza en circuitos con múltiples fuentes independientes.
Para aplicar este teorema, mantenga una fuente independiente a la vez mientras reemplaza la fuente de voltaje inactiva con un cortocircuito y la fuente de corriente inactiva con un circuito abierto, respectivamente.
El teorema establece que el voltaje a través o la corriente a través de un elemento en un circuito lineal es la suma algebraica de las contribuciones de las fuentes independientes.
Considere un circuito con un voltaje y una fuente de corriente, donde se debe determinar la caída de voltaje a través de una resistencia.
La caída de voltaje tiene contribuciones de ambas fuentes independientes.
La contribución de la fuente de voltaje se obtiene poniendo la fuente de corriente a cero.
Aplicando la ley de voltaje de Kirchhoff, se determina la corriente de bucle. Usando la ley de Ohm, se calcula la caída de voltaje.
Del mismo modo, la contribución de la fuente de corriente se obtiene poniendo la fuente de voltaje a cero.
Combinando las resistencias, se obtiene la resistencia equivalente. Usando la regla de división de corriente y la ley de Ohm, se determina la caída de voltaje.
Finalmente, al sumar las contribuciones de fuentes independientes, se obtiene la caída total de voltaje a través de la resistencia.

teorema de superposición

El principio de superposición es un concepto fundamental que establece que en un circuito lineal, el voltaje (o la corriente a través de) un elemento se puede determinar sumando las contribuciones individuales de cada fuente independiente que actúa de forma aislada. Cuando se trata de circuitos lineales que contienen múltiples fuentes independientes, este principio es una herramienta valiosa de análisis. Para aplicar el principio de superposición de forma eficaz, uno debe centrarse en una única fuente independiente a la vez y desactivar todas las demás. Este enfoque produce la salida (voltaje o corriente) resultante de la fuente activa. El efecto acumulativo de todas las fuentes activas se puede determinar sumando algebraicamente sus contribuciones individuales. Esto facilita el proceso de análisis del circuito. En particular, las fuentes dependientes no se ven afectadas, ya que se rigen por variables del circuito. Vale la pena señalar que utilizar el principio de superposición puede generar un mayor esfuerzo analítico. Por ejemplo, cuando se trata de un circuito con tres fuentes independientes, se deben analizar tres circuitos separados y simplificados, cada uno de los cuales representa la contribución de una fuente individual. A pesar de este posible inconveniente, el principio de superposición sigue siendo una técnica valiosa para simplificar circuitos complejos reemplazando fuentes de voltaje con cortocircuitos y fuentes de corriente con circuitos abiertos.

Teorema de superposición

El teorema de superposición se utiliza en circuitos con múltiples fuentes independientes.
Para aplicar este teorema, mantenga una fuente independiente a la vez mientras ...

Education

Educación

JoVE Core

Electrical Engineering

Ingeniería Eléctrica

Unit 1

Unidad 1

DC Circuit Analysis

Análisis de circuitos de CC

KEY TERMS AND CONCEPTS

TÉRMINOS Y CONCEPTOS CLAVE

Superposition Theorem

analyzing circuits with superposition

Superposition is a circuit analysis method for linear circuits with more than one independent source. It lets you find the voltage across or current through an element by adding the separate effects of each source acting alone.

To use superposition, keep one independent source active and turn off the others. A voltage source is replaced by a short circuit, and a current source is replaced by an open circuit. Then calculate the output from the single active source.

Repeat the process for each independent source in the circuit. The final voltage or current is found by algebraically adding the individual results. Dependent sources are not turned off because they depend on circuit variables.

This method can simplify complex circuits, but it may take more work. A circuit with three independent sources must be analyzed as three separate simplified circuits. Even so, superposition remains a useful tool for breaking down difficult linear circuit problems.

Analyzing Circuits with Superposition

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Learn how superposition helps solve linear circuits by analyzing one independent source at a time, then adding the voltage or current contributions.

Analyzing Circuits with Superposition | JoVE K12

JoVE Core Electrical Engineering offers easy-to-understand animated videos that cover fundamental concepts of electric circuits along with circuit analysis techniques. It incorporates first-order and second-order circuits using operational amplifiers and circuit transformation concepts. The inclusion of practical design examples and real-world applications through scientist-in-action videos adds significant educational value, making complex concepts accessible.

electrical engineering

Analyzing Circuits with Superposition

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